/**
 *
 *  利得金融
 * Copyright (c) 2013-2015 leadbank,Inc.All Rights Reserved.
 */
package com.sbw.java.advanced.demo.utils;

import org.springframework.cglib.beans.BeanCopier;
import org.springframework.util.DigestUtils;

import java.util.List;
import java.util.concurrent.ConcurrentHashMap;


/**
 * 描述:Bean 对象属性copy Util
 *
 * @author yx.song
 * @create 2018-07-19 20:07
 */
public class ConvertBeanUtils {

	private static ConcurrentHashMap<String, BeanCopier> cache = new ConcurrentHashMap<String, BeanCopier>();


	/**
	 * @param source 源对象class
	 * @param target 目标对对象class
	 * @param sourceObj 复制的源对象
	 * @param useConverter
	 * @return
	 * @throws Exception
	 */
	public static <T> T copyBeanProperties(@SuppressWarnings("rawtypes") Class source, Class<T> target,
			Object sourceObj, boolean useConverter) {
		if (sourceObj == null){
			return null;
		}
		T t;
		try {
			t = target.newInstance();
		} catch (Exception e) {
			return null;
		}
		String key = source.getSimpleName() + target.getSimpleName();
		BeanCopier copier = cache.get(key);
		if (copier == null) {
			copier = createBeanCopier(source, target, useConverter, key);
		}
		copier.copy(sourceObj, t, null);
		return t;
	}

	/**
	 *
	 *
	 * @param sourceObj  源对象
	 * @param target  目标对象
	 * @return
	 * @throws Exception
	 */
	public static <T> T copyBeanProperties(Object sourceObj, T target) {
		return copyBeanProperties(sourceObj, target, false);
	}

	/**
	 *
	 *
	 * @param sourceObj  源对象
	 * @param target  目标对象
	 * @param useConverter
	 * @return
	 * @throws Exception
	 */
	public static <T> T copyBeanProperties(Object sourceObj, T target, boolean useConverter) {
		if (sourceObj == null || target == null){
			return null;
		}
		String key = sourceObj.getClass().getSimpleName() + target.getClass().getSimpleName();
		BeanCopier copier = cache.get(key);
		if (copier == null) {
			copier = createBeanCopier(sourceObj.getClass(), target.getClass(), useConverter, key);
		}
		copier.copy(sourceObj, target, null);
		return target;
	}

	public static <T> List<T> copyListBeanPropertiesToList(List<?> sourceObjs, List<T> targets, Class<T> targetType) {
		if (sourceObjs == null || targets == null || targetType == null){
			return null;
		}
		T t;
		for (Object o : sourceObjs) {
			try {
				t = targetType.newInstance();
				targets.add(copyBeanProperties(o, t, false));
			} catch (InstantiationException e) {
			} catch (IllegalAccessException e) {
			}
		}
		return targets;
	}

	@SuppressWarnings("unused")
	private static String getHashKey(String str) {
		if (str == null){
			return null;
		}
		return DigestUtils.md5DigestAsHex(str.getBytes());
	}

	@SuppressWarnings({"rawtypes"})
	private static BeanCopier createBeanCopier(Class sourceClass, Class targetClass, boolean useConverter,
			String cacheKey) {
		BeanCopier copier = BeanCopier.create(sourceClass, targetClass, useConverter);
		cache.putIfAbsent(cacheKey, copier);
		return copier;
	}
}
